The engine P209B Code is a diagnosis code of the car engine and fixing the car engine is necessary thing. Until the car engine is fixed, you should not try to drive the car and do not try to solve engine if you are unable. For fixing the car engine issue, you need to know the meaning of the code. Different car manufacturers set different meanings of the engine code and you need to know the right meaning as wells as you have to use expertise for solving the car engine problem. Once the car engine is ok, then you can drive the car.